Simple Clap Switch Circuit using CD4017 IC
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In this tutorial, we are going to make Clap Operated Switch using CD4017 Decade counter IC. It consists of a condenser microphone that senses the clap sound and gives a clock pulse to the Decade counter IC which in response turns the ON or OFF the relay. With the first clap IC gives the HIGH...
Automatic Power cut-off Circuit using 555 Timer IC
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In this tutorial, we are going to make an Automatic power cut-off circuit with the help of a 555 timer IC and other components. This circuit automatically cut-off the power after some prescribed time which can be varied with the help of a potentiometer. There are large applications of the circuit, for example, if we want to...
Build Contactless AC Voltage Detection Circuit
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In this tutorial, we are going to make a circuit called a Contactless AC Detection circuit which will detect the presence of AC voltage when the antenna of the circuit is brought closer to the wire which is having a supply. If the wire carries a current, it will sound like a buzzer with...